/Engine/Source/Runtime/Core/Public/Math/Vector4.h
Find good arbitrary axis vectors to represent U and V axes of a plane, given just the normal.
void FindBestAxisVectors3 ( [TVector4](API\Runtime\Core\Math\TVector4)< T > & Axis1, [TVector4](API\Runtime\Core\Math\TVector4)< T > & Axis2 ) const